@article{MZ_1980__175_173021,
     author = {Robert F. Lax},
     title = {Gap {Sequences} and {Moduli} in {Genus} 4.},
     journal = {Mathematische Zeitschrift},
     pages = {67--76},
     publisher = {mathdoc},
     volume = {175},
     year = {1980},
     zbl = {0425.32010},
     url = {http://geodesic.mathdoc.fr/item/MZ_1980__175_173021/}
}